Boolean values

Boolean values in Python are two constants True and False.

In Python, not only True and False are considered True and False values.

• True value:
  • any non-zero number
  • any non-empty string
  • any non-empty object
• False value:
  • 0
  • None
  • empty string
  • empty object

Other True and False values tend to follow the condition logically.

To check boolean value of object you can use bool:

In [2]: items = [1, 2, 3]

In [3]: empty_list = []

In [4]: bool(empty_list)
Out[4]: False

In [5]: bool(items)
Out[5]: True

In [6]: bool(0)
Out[6]: False

In [7]: bool(1)
Out[7]: True